Flow in Open Channels MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Flow in Open Channels, a fundamental topic in the field of Fluid Mechanics. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Flow in Open Channels MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Flow in Open Channels mcq questions that explore various aspects of Flow in Open Channels problems. Each MCQ is crafted to challenge your understanding of Flow in Open Channels principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Fluid Mechanics tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Flow in Open Channels MCQs are your pathway to success in mastering this essential Fluid Mechanics topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Flow in Open Channels. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Flow in Open Channels knowledge to the test? Let's get started with our carefully curated MCQs!

Flow in Open Channels MCQs | Page 12 of 20

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Q111.
The wetted area of a most economical trapezoidal section is 21.58m², base width of 5m and side slope of 1H:3V. Calculate the maximum discharge through the channel if the C=60 and Sโ‚€=1/500.

a.

56.32 m³/ s

b.

66.32 m³/ s

c.

76.32 m³/ s

d.

86.32 m³/ s

Discuss
Answer: (c).76.32 m³/ s
Q112.
Calculate the depth of the most economical trapezoidal channel section having wetted area equal to 50m² and the side slope of 1H:5V.

a.

3.21m

b.

4.21m

c.

5.21m

d.

6.21m

Discuss
Answer: (c).5.21m
Q113.
The wetted perimeter of the most economical trapezoidal section is 7.47m, the base width is 3m and has the side slope of 1H:2V.

a.

1m

b.

2m

c.

3m

d.

4m

Discuss
Answer: (b).2m
Q114.
Calculate the maximum discharge through a trapezoidal channel if the wetted perimeter is 6.24m, side slope of 1H:2V and base width of 4m. Given: C=55 and Sโ‚€=1/1500.

a.

3.52 m³/s

b.

4.52 m³/s

c.

5.52 m³/s

d.

6.52 m³/s

Discuss
Answer: (b).4.52 m³/s
Q115.
The maximum discharge through the trapezoidal channel is 20 m³/s and the velocity of flow is 5 m/s. Calculate the base width of the channel if the side slope is 1H:4V.

a.

3.31m

b.

2.31m

c.

1.31m

d.

0.31m

Discuss
Answer: (b).2.31m
Q116.
What is the side slope for the most economic trapezoidal channel having depth y and base width B?

a.

\(\frac{1}{\sqrt{2}}\)

b.

\(\frac{1}{\sqrt{3}}\)

c.

\(\frac{1}{2}\)

d.

\(\frac{1}{3}\)

Discuss
Answer: (b).\(\frac{1}{\sqrt{3}}\)
Q117.
What is the angle made by the sloping side when the trapezoidal channel discharges to the maximum extent?

a.

30°

b.

45°

c.

60°

d.

90°

Discuss
Answer: (c).60°
Q118.
Calculate the maximum discharge through a trapezoidal channel if the depth is 5m.

a.

56.67 m³/s

b.

66.67 m³/s

c.

76.67 m³/s

d.

86.67 m³/s

Discuss
Answer: (d).86.67 m³/s
Q119.
If the side slope angle in a trapezoidal section is 45° and it discharges to the maximize extent, calculate the top width of the channel section. Given: y = 4m

a.

10.31m

b.

11.31m

c.

12.31m

d.

13.31m

Discuss
Answer: (b).11.31m
Q120.
Estimate the wetted perimeter of a circular channel having radius R and depth d, if the angle subtended at the centre is ฦŸ.

a.

RฦŸโ„2

b.

RฦŸ

c.

2RฦŸ

d.

3RฦŸ

Discuss
Answer: (c).2RฦŸ
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